CMMG 30A650AAB Dissent BR4 .300 Blackout 16.1" 11-Round Carbine

The CMMG 30A650AAB Dissent BR4 .300 Blackout 16.1" 11-round carbine is purpose-built for operators who demand subsonic capability in a compact, mission-ready platform. Chambered in .300 Blackout, this rifle excels in suppressed fire scenarios where supersonic crack elimination and barrier penetration are tactical priorities. The 16.1-inch barrel provides the optimal velocity sweet spot for subsonic ammunition while maintaining a handling profile suitable for close-quarters and vehicle-mounted operations. Law enforcement and military professionals recognize the Dissent BR4 as a serious alternative to traditional intermediate carbines when sound signature and terminal performance matter.

Built on a modern direct-impingement platform, the Dissent BR4 delivers reliable semi-automatic fire with the ergonomic controls and modularity that operators expect from contemporary tactical rifles. The 11-round magazine capacity reflects the cartridge's larger case size compared to 5.56 NATO, and CMMG's engineering ensures consistent cycling across subsonic and supersonic loadings. At 11.8 pounds, the carbine balances firepower with carryability, making it suitable for extended operations without inducing fatigue. The rail system and flat-top design accommodate a wide range of optics and accessories, enabling rapid customization for specific mission requirements or personal preference.

This rifle is ideal for shooters and professionals transitioning from standard 5.56 platforms who need superior subsonic performance or increased penetration without magnum recoil. The .300 Blackout chambering pairs exceptionally well with suppression, making the Dissent BR4 a top choice for night operations, training environments, and scenarios where controlling acoustic signature is critical. Maintenance and parts compatibility leverage established AR-pattern standards, streamlining logistical support. Whether for tactical application, advanced shooting sports, or home defense in sound-sensitive settings, the CMMG Dissent BR4 delivers proven performance in a refined package.